Laser satellite communication (SatCom) using free-space optical communication has attracted considerable interest both from academia and industry in recent years. This technology can provide massive connectivity on the order of thousands of kilometers between various types of satellites, including geostationary-earth-orbit (GEO), medium-earth-orbit (MEO), low-earth-orbit (LEO) satellites, through downlink and uplink communications with ground stations [1]}, [2]}, [3]}, [4]}. Laser SatCom can also provide numerous advantages compared to its RF counterpart, including lower power consumption, lower cost, and reduced mass [5]}, [6]}. Furthermore, optical communication is immune to interference, and it does not need regulatory restrictions for the frequency use. Due to these advantages, optical communication has been used in the constellations of SpaceX's Starlink and OneWeb to provide inter-satellite connectivity between a massive number of LEO satellites.
